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2026-04-12 00:00 Turkey

Litigation & Arbitration in Turkey

Turkey sits at the intersection of European and Asian commercial flows, making dispute resolution in Turkish courts and arbitral tribunals a frequent reality for international businesses. The Turkish legal system is a civil law jurisdiction rooted in adapted Swiss, German and Italian codes, which means procedural rules are codified, formalistic and strictly enforced. Foreign companies that enter Turkish contracts without understanding the litigation and arbitration landscape often face avoidable delays, cost overruns and adverse judgments. This article maps the full dispute resolution landscape - from pre-trial steps and court structure to arbitration options, enforcement and strategic trade-offs - so that executives and legal counsel can make informed decisions before a dispute escalates.

The Turkish legal framework for commercial disputes

Turkey's primary procedural statute is the Code of Civil Procedure (Hukuk Muhakemeleri Kanunu, Law No. 6100), which governs all civil and commercial litigation before state courts. Commercial matters are handled by specialised Commercial Courts of First Instance (Asliye Ticaret Mahkemesi), which operate in all major commercial centres including Istanbul, Ankara, Izmir and Bursa. These courts have exclusive jurisdiction over disputes between merchants and over corporate, insolvency and negotiable instrument matters under the Turkish Commercial Code (Türk Ticaret Kanunu, Law No. 6102).

The court hierarchy runs from first-instance courts through the Regional Courts of Appeal (Bölge Adliye Mahkemesi), introduced in 2016 as an intermediate appellate tier, to the Court of Cassation (Yargıtay) as the final court of review. This three-tier structure means a fully litigated commercial dispute can take three to six years from filing to a final, unappealable judgment. The Regional Courts of Appeal review both facts and law, while the Court of Cassation reviews only questions of law and procedural correctness.

Jurisdiction over a dispute is determined by the domicile of the defendant or the place of performance of the contract, under Articles 6 and 10 of Law No. 6100. Parties may also agree on a specific Turkish court by written jurisdiction clause, which Turkish courts generally respect for domestic disputes. For international contracts, Turkish law allows parties to choose foreign law and foreign courts or arbitration, subject to the limitations discussed below.

A non-obvious risk for foreign parties is that Turkish courts apply Turkish procedural law strictly regardless of the governing law of the contract. Even if the substantive law is English or Swiss law, all procedural steps - service of process, evidence submission, hearing schedules - follow Turkish rules. Many international clients underestimate this bifurcation and arrive unprepared for the formalism of Turkish civil procedure.

Pre-trial requirements and mandatory mediation

Since 2018, Turkish law has imposed mandatory mediation as a pre-condition to filing commercial lawsuits. Under the Law on Mediation in Civil Disputes (Hukuk Uyuşmazlıklarında Arabuluculuk Kanunu, Law No. 6325) as amended, a claimant must first apply to a registered mediator before initiating proceedings in a Commercial Court of First Instance. Failure to complete this step results in the court dismissing the case on procedural grounds without examining the merits.

The mandatory mediation process works as follows. The claimant files an application with the mediation office attached to the relevant courthouse. A registered mediator is assigned within three weeks. The parties then have three weeks to reach a settlement, extendable by mutual agreement to a further three weeks. If mediation fails, the mediator issues a final report, and the claimant has two weeks from that report to file the lawsuit. The entire pre-trial mediation phase typically takes six to eight weeks in practice.

Mandatory mediation covers monetary claims, employment disputes and commercial claims. It does not apply to intellectual property infringement actions, insolvency proceedings or disputes where injunctive relief is urgently needed. In those cases, the claimant may proceed directly to court.

In practice, mandatory mediation is not merely a formality. A significant proportion of commercial disputes settle at this stage, particularly where the amounts in dispute are moderate and the parties have an ongoing business relationship. Experienced Turkish counsel use the mediation phase strategically - to assess the opponent's position, gather information and negotiate from a position of procedural readiness. A common mistake by foreign claimants is to treat mediation as a bureaucratic hurdle and send a junior representative without settlement authority, which wastes the opportunity and signals weakness.

To receive a checklist of pre-trial steps for commercial litigation in Turkey, send a request to info@vlo.com.

Litigation in Turkish commercial courts: procedure, timelines and costs

Once mandatory mediation fails, the claimant files a statement of claim (dava dilekçesi) with the competent Commercial Court of First Instance. The statement must comply with the formal requirements of Article 119 of Law No. 6100, including a precise statement of the legal basis, factual grounds and relief sought. The court assigns a file number and serves the claim on the defendant, who has two weeks to file a response. The claimant then has two weeks to reply, and the defendant has a further two weeks for a rejoinder. This written exchange phase - the preliminary examination stage (ön inceleme) - concludes with a mandatory hearing at which the court identifies the disputed issues and attempts settlement.

After the preliminary hearing, the case enters the investigation phase (tahkikat), during which evidence is submitted, witnesses are heard and expert reports are obtained. Turkish courts rely heavily on court-appointed experts (bilirkişi) in commercial disputes involving accounting, construction, intellectual property valuation and similar technical matters. Expert reports carry significant weight, and challenging them requires filing a detailed written objection within two weeks of service. Many foreign parties fail to engage with expert reports promptly, which courts treat as acceptance.

The investigation phase typically takes 12 to 24 months in Istanbul Commercial Courts, which carry the heaviest caseloads in Turkey. Courts in smaller cities tend to move faster. After the investigation phase, the court schedules oral argument and issues a written judgment. The losing party has two weeks to appeal to the Regional Court of Appeal, which reviews the case de novo on both facts and law. A further cassation appeal to the Court of Cassation is available on legal grounds within one month of the appellate decision.

Costs in Turkish commercial litigation include court filing fees (proportional to the amount in dispute), lawyers' fees and expert costs. Lawyers' fees for commercial disputes typically start from the low thousands of USD for straightforward matters and scale significantly for complex multi-party litigation. Court filing fees are proportional to the claim value and are set by the Fee Schedule under the Law on Fees (Harçlar Kanunu, Law No. 492). The losing party bears the winner's reasonable legal costs, but Turkish courts apply a tariff-based cost recovery system, meaning full indemnity cost recovery is rarely achieved.

A practical scenario: a European supplier with a claim of EUR 500,000 against a Turkish distributor for unpaid invoices would typically spend 18 to 30 months from mandatory mediation through first-instance judgment, with additional time if appeals are pursued. The business economics of this timeline - frozen receivables, management distraction, currency exposure - often make early settlement or arbitration more attractive than full litigation.

Arbitration in Turkey: domestic and international options

Turkey has a developed arbitration framework operating on two levels: domestic arbitration governed by Law No. 6100 (Articles 407-444) and international arbitration governed by the International Arbitration Law (Milletlerarası Tahkim Kanunu, Law No. 4686). Law No. 4686 is modelled on the UNCITRAL Model Law and applies where at least one party is foreign or where the dispute has a foreign element and the parties have agreed to international arbitration.

The Istanbul Arbitration Centre (İstanbul Tahkim Merkezi, ISTAC) is Turkey's primary institutional arbitration body. Established in 2015, ISTAC administers both domestic and international arbitrations under its own rules, which are aligned with international best practice. ISTAC proceedings are conducted in Turkish or, by agreement, in English or other languages, which is a significant advantage for cross-border disputes. The ISTAC Rules provide for expedited proceedings for claims below a threshold set periodically by the centre, with a target award timeline of six months.

Parties may also choose other institutional rules for Turkey-seated arbitrations, including ICC, LCIA or UNCITRAL rules. Turkish-seated ICC arbitrations are common in major infrastructure, energy and M&A disputes. The seat of arbitration determines the supervisory jurisdiction of Turkish courts over the arbitral process - including challenges to arbitrators, interim measures and setting aside proceedings.

Under Article 15 of Law No. 4686, Turkish courts may grant interim measures in support of arbitration, including asset freezing orders (ihtiyati tedbir) and precautionary attachments (ihtiyati haciz). These measures are available both before and during arbitral proceedings and are particularly valuable where there is a risk of asset dissipation. The application is made to the competent civil court of first instance, and the court may act ex parte in urgent cases, requiring the applicant to post security.

A common mistake by international parties is to include a generic arbitration clause without specifying the seat, rules, number of arbitrators and language. Turkish courts have held that ambiguous arbitration clauses may be unenforceable, sending the dispute back to state courts. Drafting a precise, self-executing arbitration clause is not a formality - it is the foundation of the entire dispute resolution strategy.

To receive a checklist for drafting and enforcing arbitration clauses in Turkey, send a request to info@vlo.com.

Enforcement of foreign judgments and arbitral awards in Turkey

Turkey is a party to the New York Convention on the Recognition and Enforcement of Foreign Arbitral Awards (1958), which it ratified with a reciprocity reservation. This means Turkey enforces New York Convention awards from other contracting states, subject to the limited grounds for refusal set out in Article V of the Convention. In practice, Turkish courts have become more consistent in enforcing foreign arbitral awards, though the process requires a separate enforcement action before a Turkish court.

The enforcement of a foreign arbitral award in Turkey proceeds as follows. The applicant files an enforcement petition (tenfiz davası) with the competent Civil Court of First Instance. The court examines whether the award meets the conditions of Law No. 4686 (for international awards) or the Code of Civil Procedure (for domestic awards). The grounds for refusal are narrow: lack of valid arbitration agreement, violation of due process, excess of jurisdiction, non-arbitrability of the subject matter, or violation of Turkish public policy (kamu düzeni). The public policy ground is the most frequently invoked by respondents and the most unpredictable in outcome.

Enforcement of foreign court judgments follows a different regime under Articles 50-59 of the Private International Law and Procedural Law (Milletlerarası Özel Hukuk ve Usul Hukuku Hakkında Kanun, Law No. 5718). Turkey does not have a general bilateral treaty network for judgment enforcement comparable to EU member states. Enforcement of a foreign court judgment requires the Turkish court to verify reciprocity - meaning the foreign country must enforce Turkish judgments on comparable terms. Reciprocity is assessed on a case-by-case basis and is not guaranteed for all jurisdictions.

A practical scenario: a German company obtains an ICC arbitral award against a Turkish counterparty. It files an enforcement petition in Istanbul. The Turkish court examines the award, the arbitration agreement and the procedural record. If the respondent raises a public policy objection, the court may schedule hearings and request expert opinions, adding three to nine months to the enforcement timeline. Once the enforcement order is granted, the applicant can proceed to execution against Turkish assets - bank accounts, receivables, real property - through the Enforcement and Bankruptcy Offices (İcra ve İflas Müdürlüğü).

A non-obvious risk in enforcement proceedings is that Turkish courts apply their own conflict of laws rules to assess whether the foreign award or judgment violates Turkish mandatory law (emredici hükümler). Awards involving interest rates that exceed Turkish statutory limits, or awards touching on matters reserved to Turkish exclusive jurisdiction (such as Turkish real property rights), face heightened scrutiny. Structuring the arbitral proceedings with Turkish enforcement in mind - particularly on remedies and interest - significantly improves the prospects of smooth enforcement.

Strategic choice: litigation versus arbitration in Turkish commercial disputes

The choice between Turkish court litigation and arbitration is not purely a matter of preference - it depends on the nature of the dispute, the parties, the assets at stake and the enforcement landscape.

Turkish court litigation offers certain advantages. It is the only option for disputes that are non-arbitrable under Turkish law, including insolvency proceedings, certain IP registration matters and consumer disputes. Court judgments are directly enforceable through the Turkish execution system without a separate recognition step. For disputes involving Turkish counterparties with assets exclusively in Turkey, litigation may be more cost-effective than arbitration for smaller claims.

Arbitration, by contrast, offers confidentiality, party autonomy in choosing arbitrators with relevant expertise, and the ability to conduct proceedings in English or another language. For cross-border disputes where enforcement may be needed in multiple jurisdictions, an arbitral award under the New York Convention is generally more portable than a Turkish court judgment. Arbitration also avoids the unpredictability of court-appointed experts and the delays of the Turkish appellate system.

The business economics of the choice depend on several factors. For a dispute with a value below approximately EUR 100,000, the cost of institutional arbitration - filing fees, arbitrator fees, legal costs - may exceed the expected recovery, making mediation or court litigation more rational. For disputes above EUR 500,000, particularly in construction, energy, distribution or M&A contexts, arbitration typically offers better value through faster resolution, expert arbitrators and international enforceability.

A third scenario involves a Turkish joint venture dispute between a foreign investor and a Turkish partner. The foreign investor wants arbitration in a neutral seat (London, Geneva or Paris) under ICC rules. The Turkish partner insists on Istanbul courts. The outcome of this negotiation - at the contract drafting stage - determines the entire dispute resolution trajectory. Experienced counsel advise foreign investors to insist on international arbitration clauses in joint venture agreements, shareholders' agreements and major supply contracts, and to resist jurisdiction clauses in favour of Turkish courts unless the dispute value is low and the assets are exclusively Turkish.

We can help build a strategy for dispute resolution in Turkey tailored to your specific contract structure and counterparty profile. Contact info@vlo.com.

Practical risks, common mistakes and hidden pitfalls

Several recurring issues affect international parties in Turkish disputes, and awareness of them before a dispute arises is far more valuable than discovering them mid-proceedings.

Statute of limitations. The general limitation period for commercial claims under the Turkish Code of Obligations (Türk Borçlar Kanunu, Law No. 6098) is ten years for contractual claims and two years for certain commercial transactions. However, specific limitation periods apply to bills of exchange (three years), cheques (six months to one year) and cargo claims (one year). Missing a limitation deadline is fatal - Turkish courts do not have discretion to extend it. A common mistake is for foreign creditors to delay action while attempting informal resolution, only to find the claim time-barred.

Service of process on foreign parties. When a Turkish party sues a foreign company, service must be effected through the Hague Service Convention or bilateral treaties. This process can take three to twelve months, during which the Turkish court's timeline is suspended. Foreign defendants sometimes learn of Turkish proceedings only after a default judgment has been entered. Monitoring Turkish litigation registries and maintaining a local representative address in Turkey are practical safeguards.

Currency and interest. Turkish courts award damages in Turkish lira unless the contract specifies a foreign currency. Under Article 99 of Law No. 6098, parties may agree to foreign currency obligations, but enforcement of foreign currency judgments through Turkish execution offices involves conversion at the rate on the date of payment. In a high-inflation environment, the gap between the contract value and the recovered amount can be substantial. Structuring contracts with explicit foreign currency clauses and specifying the applicable interest rate reduces this risk.

Interim measures and asset preservation. Turkish law provides two principal interim measures: precautionary attachment (ihtiyati haciz) for monetary claims under the Enforcement and Bankruptcy Law (İcra ve İflas Kanunu, Law No. 2004), and precautionary injunction (ihtiyati tedbir) for non-monetary relief under Law No. 6100. Both are available before filing the main action, and both require the applicant to demonstrate urgency and post security. The security amount is set by the court and typically ranges from 15% to 25% of the claim value. Acting quickly to secure assets before a counterparty dissipates them is often the most consequential step in the entire dispute.

Choice of law in arbitration. When parties choose a foreign governing law for their contract but seat the arbitration in Turkey, the arbitral tribunal applies the chosen law to the merits but Turkish arbitration law to the procedure. Conflicts can arise where the foreign substantive law produces a result that Turkish courts consider contrary to public policy - for example, punitive damages, which are not recognised under Turkish law. Structuring the remedies clause carefully avoids an award that is valid on its face but unenforceable in Turkey.

The cost of non-specialist mistakes in Turkish proceedings is high. Procedural errors - missed deadlines, defective service, incomplete evidence submissions - are rarely correctable on appeal and can result in losing a meritorious claim entirely. Engaging Turkish-qualified counsel from the outset, rather than relying on foreign counsel unfamiliar with Turkish procedure, is the single most important risk mitigation step.

To receive a checklist of common procedural pitfalls in Turkish commercial litigation and arbitration, send a request to info@vlo.com.

FAQ

What is the biggest practical risk for a foreign company entering Turkish litigation?

The biggest practical risk is procedural non-compliance at the early stages of the case. Turkish civil procedure is highly formalistic: the statement of claim must meet specific formal requirements, mandatory mediation must be completed before filing, and evidence must be submitted within strict deadlines. A foreign company that relies on its home-country litigation instincts - or on counsel unfamiliar with Turkish procedure - risks having its claim dismissed on technical grounds or losing the ability to introduce key evidence. Engaging Turkish-qualified counsel before the dispute reaches the filing stage, not after, is the most effective safeguard.

How long does it take and how much does it cost to enforce a foreign arbitral award in Turkey?

Enforcement of a foreign arbitral award in Turkey typically takes between 12 and 24 months from filing the enforcement petition to obtaining an enforceable court order, assuming the respondent contests the application. If the respondent raises a public policy objection or challenges the validity of the arbitration agreement, the timeline extends further. Legal costs for enforcement proceedings start from the low thousands of USD for straightforward cases and increase with complexity. Once the enforcement order is granted, execution against Turkish assets - bank accounts, real property, receivables - proceeds through the Enforcement and Bankruptcy Offices and can take an additional three to twelve months depending on asset type and location.

When should a business choose arbitration over Turkish court litigation?

Arbitration is generally preferable when the dispute has a cross-border element, the contract value is significant (broadly above EUR 200,000-300,000), or enforcement may be needed outside Turkey. It is also preferable when the subject matter requires specialist expertise - construction, energy, technology - that a court-appointed expert may not adequately cover. Turkish court litigation is more appropriate for lower-value disputes involving Turkish parties with assets exclusively in Turkey, or for matters that are non-arbitrable by law, such as insolvency proceedings. The choice should be made at the contract drafting stage, not after a dispute arises, because retrofitting an arbitration clause into an existing contract requires the counterparty's agreement.

Conclusion

Turkey's dispute resolution landscape offers genuine options for international businesses - from well-structured commercial courts and mandatory mediation to a growing institutional arbitration market anchored by ISTAC and supported by the New York Convention. The system rewards preparation: parties that understand the procedural rules, structure their contracts carefully and act promptly when disputes arise consistently achieve better outcomes than those who react. The risks - limitation periods, public policy barriers to enforcement, currency exposure and procedural formalism - are manageable with the right strategy and qualified local counsel.

Our law firm Vetrov & Partners has experience supporting clients in Turkey on commercial litigation and arbitration matters. We can assist with pre-dispute contract review, arbitration clause drafting, representation in Turkish Commercial Courts, enforcement of foreign awards and interim asset preservation measures. To receive a consultation, contact: info@vlo.com.